The U.S. Environmental Protection Agency estimates that annual sales of Energy Star LED bulbs exceed 45 million units

In the past year, from April 22, 2013 to April 22, 2014, many retailers in the United States including Ace Hardware, Best Buy, Home Depot, etc. have participated in this challenge. They promote Energy Star LED bulbs in letters, on their website, and in-store displays to help consumers understand its multiple benefits. In addition, purchase subsidies also make these light bulbs more price-competitive and in line with the choices of ordinary consumers. Although reported sales have reached 20 million units, the Environmental Protection Agency estimates that total sales of Energy Star LED bulbs last year exceeded 45 million units.